Multi-View Majority Vote Learning Algorithms: Direct Minimization of PAC-Bayesian Bounds
The PAC-Bayesian framework has significantly advanced our understanding of statistical learning, particularly in majority voting methods. However, its application to multi-view learning remains underexplored. In this paper, we extend PAC-Bayesian theory to the multi-view setting, introducing novel PAC-Bayesian bounds based on R\'enyi divergence. These bounds improve upon traditional Kullback-Leibler divergence and offer more refined complexity measures. We further propose first and second-order oracle PAC-Bayesian bounds, along with an extension of the C-bound for multi-view learning. To ensure practical applicability, we develop efficient optimization algorithms with self-bounding properties.
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